128468740

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{66221}}^1$

素因数の和:66327

約数の個数: 24

約数和(自身を含む): 272569752

約数和(自身を除く): 144101012

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 66221, 132442, 264884, 331105, 662210, 1324420, 6423437, 12846874, 25693748, 32117185, 64234370, 128468740]

約数ペア:

[(1, 128468740), (2, 64234370), (4, 32117185), (5, 25693748), (10, 12846874), (20, 6423437), (97, 1324420), (194, 662210), (388, 331105), (485, 264884), (970, 132442), (1940, 66221)]